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The Reliability Mathematical Model of Load-sharing Parallel Systems based on Fatigue Cumulative Damage

SC IJPE 16

Guang-bo Hao1 and Li-yang Xie2

1 Mechanical Engineering Department, Heriot-Watt University, Edinburgh, UK, EH144AS;
2 School of Mechanical Engineering & Automation, Northeastern University, Shenyang, China, 110004

 

Received on: October 19, 2008

 

Abstract:

Conventional reliability models for parallel systems are not applicable for the analysis of parallel systems with load transfer and sharing. In this short communication, firstly, the dependent failures of parallel systems are analyzed, and the reliability model of load-sharing parallel system is presented based on Miner cumulative damage theory and the full probability formula. Secondly, the parallel system reliability is calculated by Monte Carlo simulation when the component life follows the Weibull distribution. The research result shows that the proposed reliability mathematical model could analyze and evaluate the reliability of parallel systems in the presence of load transfer.

 

Status: Published in Vol. 5, No. 4, July 2009, pp.397-399.

 

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